Improvement in reamers



v E. SULLIVAN.

KRAMER.

, No. 79,276. Patented June 23, 1868.

EDWARD SULLIVAN, OF PITTSBURG, PENNSYLVANIA.

Letters Patent No. 79,276, dated Jmze 23, 1868; antedatedJun 6, I868.

IMPROVEMENT IN REAMIERS.

dip Stlgthuh nfrmb'ir, in tight-Emits finish: Emil making and n lljt illllllt, I

TO ALL WHOM ITMAY CONCERN: i .Be it known that I, EDWARD SULLIVaN, of Pittsburg, in the county of Allegheny, and-'Stizte ,of Pennsyl- Vania, have inventeda new and useful Improvement in G'rhduating-Reamcrs;" and (lo-hereby declare the following to be a full and exact desc'ription thereof, reference being had to the accompanyingdra'wings, and to the letters of reference marked thereon. p V

'The nature of my invention consists inthe combination and arrangement of a nnmbe'r' 'e'f parts, the whole making a mother, the cutters of which can he graduated so he tohore holes-of different diameters, and'operating in the manner'hereinafter described.

To enable others skilled in the art to make and use my invention; I will proceed to describe its construc tion and operation.

In the accompanying drawings, making part of this specification- Figure 1 is a longitudinal section. of my improved res-mars.-

Figure 2 is a transverse section of the some, out through line m, fig; 1.

In fig. 1, B represents a hollow shank, upon one end of which are formed two screw-threads, one of which is to receivcthe,cut-tehhead-Q and the other to receive the sleeve D. it are the cutters, and J are the wooden blanks. A is a rod or stem placed within the shank B, and furnished at one end with the screw-threads, to receive the cone f, and at the other endwith a square head to receive a-wrcnch, and with the screwdhread and nut g. is a conical-shaped piece, for the purpose of holding the cutters and blanks. C is the cutter-head, through which the cutters-and'blanks project. e is a collar, and I) is a sleeve for the purpose of holding the collar 0 up against the ends of the cutters and blanks.

The manner in which I construct my mama! is as follows:

. I make the shank B ofcast iron, and either core or bore the hole through it to receive the rod A'. Upon one end of the shank B are formed the screw-threads to receive the cutter-head G and sleeve D. The cutter-head I also make of cast iron, hollow, as shown by the dotted lines], and with slots or mortises, which extend out through one end of the head to-reoeive the cutters I; and blanks J. Upontheopen end of the cntter-headC, I form two screw-threads, one maleand onefemale; the female to receive the end of the shank B, and the male to mcetthe male screw-thread-on the shank B; and to receive thesleeve. I),'the collar e is made large enough inside to pass over the outside of the-above-mentioned male screw threads, intended to receive the sleeve D, which is made of cast iron, the collar .e of wrought iron. The rod A and nut g, Imakc of wrought iron or steel, and terminate one end of the rod in a conical shape, which fits into the recessin the" cutter-head G, as shown at the point marked-o, for the purpose ofkec'ping the rod in the centre of the reunion, audgsteadying the cutters.

Upon the red, at the point marked to, I form a collar, i,vwhich fits intoa recess in'the' end of the shank-B, the

use of said collar, when used in connection with the nut g, being to fasten the rod Awhen the cutters are set to the required position. The cone 1 make of wrought iron or steel, and on the in s ide-of the hole, which passes through the centre of it, I form the screw-thread to receive the screw-thread w on therod A, and upon its out side surface I form the dove-tail grboves to receive the cutters and blanks, which are fitted neatly into it, but with suflicient play to allow the cone to he moved back and forth by the rod A, for thepurpose of regulating the cutters and blanks. The cutters I make of steel, and the blanks of hard wood, such as hickory or locust, and after fitting than; into the cone and cutter-head, aud puttiug all parts of the rooms; together, I put the reamer into the turning-lathe, upon the centres marked mend dress them ofi true. I now file ed the back of the cutters, as shown at the points marked t, so as to give them a cutting-edge. Tho blanks I leaveas they come from the lathe, their purpose being to steady the reamer in the work.

The reamer is new finished and ready for operation, which is as follows:

Havin the diameter given to which it is'required to bore a hole, I unscrew the nut-g upon the rod A and the sleeve D upon the shank B, and placing a wrench on the end of the rod, "I turn said'rod in the proper dimetion, and move the cone f, which moves the cutters h and blanks J to the required size; I now tighten the nut g np'on the rod A, which draws thel'collars {up against the dad of the shank B, nnd thereby prevent the rod A from-becoming disarrnnged and moving the cuttersnnd blanks. I nowtightanuj the sleeve 'Dngninnt the collar e, which comet .against.the 'cnttersfdnd blanks,- vihich comes against the ciitter-hend Cgaud by this means bind the cutters 5nd blanks firmly in their place.-

Theron-mgr,- .is no rqadyfor use, and isiupplied to the work in-the tun c manner no the ordinu-y roll ng and "rose-hitftho application of which is well known to-th okillfulnorkmnmond therefore not necessary to be decr ibd. I v 4 I wish it understood I do not confine myself to my particuin rize o1- proportion, the kind of moterial med in-the'constructicn "of my improved neamer, for the-same may bowcried to rait thej u d gmetit o f-the. v mechanic makingand using it, and'th spine gencr il roonlt cbtaiimd. Having thus describgd the nature, construction, and'operatio n of my improycment, what I claim is of my invention, ia-- Th combination and arrangement offtha cutters a;n d "blnnk-headic," collar siev e D, cone f, rod A, and] ithqoutters and blanks, the whole being constructed, arranged, combined, and operatingsnb stantiallj as herein described, and for the purpose s'ot forth."

EDWARD SULLIVAN.- Witnegqes Jlums J. JOHNSTON, jJz ur's McBnmn. 

